After 140 years and numerous false dates, they still believe Armageddon is immanent.
They have no shame saying things like:
“That now-operating kingdom in heaven will, within the twentieth century, cleanse the entire earth of wickedness. ...
Revelation 16:16 calls it the "war of the great day of God the Almighty," Armageddon. This war will come in the twentieth century. It will come right on schedule, as have the wars, food shortages, earthquakes and other events foretold. This generation will see its fulfillment." Awake! 1961 Feb 22 pp.5-8
"Shortly, within our twentieth century, the "battle in the day of Jehovah" will begin against the modern antitype of Jerusalem, Christendom." The Nations Shall Know That I Am Jehovah 1971 p.216
The apostle Paul was spearheading the Christian missionary activity. He was also laying a foundation for a work that would be completed in our twentieth century. (w1989 1/1 12)
And Witnesses still think God is backing them. That's what you get for trusting the false promises of men.